This README.txt file was generated on 2021-05-18 by Ching-Yao Lai


GENERAL INFORMATION

1. Title of Dataset: Experimental data for paper "hydraulic transmissivity inferred from ice-sheet relaxation following Greenland supraglacial lake drainages," Nature Communications (2021)

2. Author Information
	A. Principal Investigator Contact Information
		Name: Ching-Yao Lai
		Institution: Princeton University
		Address: 418C Guyot Hall, Department of Geosciences, Princeton University, Princeton, NJ 08544
		Email: cylai@princeton.edu


METHODOLOGICAL INFORMATION

1. Description of methods used for collection/generation of data: 
This experimental setup mimics ice lying above the drainage system. 
In the experiment, a fluid-filled blister is generated via liquid injection into the interface between a transparent elastic layer and a porous substrate. 
After injection of liquid, the fluid permeates from the blister through the porous substrate, the blister volume V(t) relaxes exponentially with time. 
Our lab experiments show that varying the permeability of the porous substrate k significantly impacts the relaxation timescale in the experiments. 


DATA-SPECIFIC INFORMATION FOR: Relaxation Experiment Data.xlsx

This excel file includes experimental data for three permeabilities (k = 98, 52, 20 /mu m^2)
1. Columns A-C: The measured blister volume as a function of time and the measurement uncertainties in volume. (Data points reported in Fig. 2c)
2. Columns E-H: The dimensionless time (tau=t/tc) and dimensionless volume (V/Vi) and their associated uncertainties. (Data points reported in Fig. 2d)